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A Newly Recognized Very Young Supernova Remnant in M83
William P. Blair, P. Frank Winkler, Knox S. Long +7
As part of a spectroscopic survey of supernova remnant candidates in M83 using the Gemini-South telescope and GMOS, we have discovered one object whose spectrum shows very broad li…
The slim-disk state of the ultraluminous X-ray source in M83
Roberto Soria, K. D. Kuntz, Knox S. Long +3
The transient ULX in M83 that went into outburst in or shortly before 2010 is still active. Our new XMM-Newton spectra show that it has a curved spectrum typical of the upper end o…
Spitzer Observations of the Type Ia Supernova Remnant N103B: Kepler's Older Cousin?
Brian J. Williams, Kazimierz J. Borkowski, Stephen P. Reynolds +7
We report results from Spitzer observations of SNR 0509-68.7, also known as N103B, a young Type Ia supernova remnant in the Large Magellanic Cloud that shows interaction with a den…
An Expanded HST/WFC3 Survey of M83: Project Overview and Targeted Supernova Remnant Search
William P. Blair, Rupali Chandar, Michael A. Dopita +7
We present an optical/NIR imaging survey of the face-on spiral galaxy M83, using data from the Hubble Space Telescope Wide Field Camera 3 (WFC3). Seven fields are used to cover a l…
A Deep Chandra ACIS Survey of M83
Knox S. Long, Kip D. Kuntz, William P. Blair +5
We have obtained a series of deep X-ray images of the nearby galaxy M83 using Chandra, with a total exposure of 729 ks. Combining the new data with earlier archival observations to…
Spitzer IRS Observations of the XA Region in the Cygnus Loop Supernova Remnant
R. Sankrit, J. C. Raymond, M. Bautista +5
We report on spectra of two positions in the XA region of the Cygnus Loop supernova remnant obtained with the InfraRed Spectrograph on the Spitzer Space Telescope. The spectra span…